Signal
Description
Mast.noSucc
Input for a blocking signal from the master CB.
This signal is triggered by the rising edge of the Def.Trip output from the master
reclosure function and resets after a fixed time of 500 ms.
Set to
off (F or False), if not needed.
DelayFlwr.
Signal to delay the follower CB for as long as the master circuit-breaker has not
completed its autoreclosure cycle.
The signal picks up at the start of master AR dead time and is reset either by the
rising edge of the Def.Trip output or the falling edge of the Close CB output after
the time
tClose.
Blk.toFlwr
Signal to block the follower CB as long as reclosure of the master CB is
unsuccessful.
The excursion of this signal is the same as for the Def Trip output.
CB2 Ready
Input excited by a signal from CB2 when it is ready (open/close/open).
Set to
off (F or False), if not needed or not fitted.
Input logic: CB ready OR CB2 ready
In a duplex scheme, the autoreclosure cycle is enabled either by an active CB ready
or CB2 ready input.
Resetting of this input is delayed internally by 100 ms.
CO Ready 2
Input excited by a signal from CB2 when it is ready for a close/open operation.
Set to
on (T or True), if not needed, not fitted and Dead line 2 is not used.
Input logic for enabling the close command: [(synchrocheck2 AND CO Ready 2) OR
Dead line 2 OR ExtSCBypas].
CB2 open
I/P excited by a signal from CB2 when it is open.
Set to
on (T or True), if not needed. Observe the information given for the duplex
logic in a duplex scheme.
SynchroChck2
Input for a signal from a synchrocheck function belonging to CB2.
Set to
on (T or True), if not needed, not fitted and Dead line 2 or ExtSCBypas not
used.
Input logic for enabling the close command: [(synchrocheck2 AND CO Ready 2) OR
Dead line 2 OR ExtSCBypas].
Dead line 2
Input indicating that line 2 is de-energized (CB2 open and VTs 2 on the busbar side).
Set to
off (F or False), if not needed.
An active input overrides the following logical relationship of the inputs:
synchrocheck 2 AND CO Ready 2.
Close CB2
Close CB2 signal (duplex)
CB2 Priority
Input for determining the preferred circuit-breaker:
off (F or False) CB1 is preferred circuit-breaker
on (T or True) CB2 is preferred circuit-breaker
If both circuit-breakers are closed before a fault, only the preferred circuit-breaker
performs the entire autoreclosure cycle. The other circuit-breaker closes either after
successful autoreclosure or when the close command to the preferred circuit-
breaker is not enabled (missing CO Ready or Synchrocheck).
1) For the autoreclosure function to operate correctly, at least the Start and Trip CB 3P inputs must be
connected to a protection function or via a binary I/P to an external protection relay.
5.8.6
Configuration
5.8.6.1
General
GUID-DFA37C03-18E1-4EE9-9F28-FBA0371C66FB v1
The autoreclosure function can perform from 1 to 4 autoreclosure attempts. The first attempt
can be either single or three-phase while the subsequent attempts are always three-phase. The
type and number are determined by the parameters
1. AR Mode (4 different modes for the 1st
reclosure cycle) and
2..4 AR Mode.
The function can operate in conjunction with either an external distance protection relay or
other internal protection functions.
1MRK 505 406-UEN B
Section 5
Bay protection functions
Bay protection functions REB500
137
Technical manual
© Copyright 2019 ABB. All rights reserved
